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Chromite processing involves crushing, milling to less than 1mm and further beneficiation using gravity circuits and spiral concentrators are widely used for this purpose. In this …
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Chromium (Cr) ore refers to a natural mineral deposit that contains chromium in its raw form. Chromium is a chemical element with the symbol Cr and atomic number 24. It is a hard, lustrous, and corrosion-resistant metal that is widely used in various industrial applications due to its unique properties.
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Cromite's goal is to. limit the features built into the browser that can be used as a platform for tracking users' habits, and, if it is not technically possible, disable them and leave it up to the user to choose whether to re-enable them
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An investigation into the role of froth phase in controlling chromite in the flotation of UG2 ore using laboratory column flotation cell. Miner. Eng. 2013, 55, 125–131. [Google Scholar] Hay, M.P. A case study of optimizing UG2 flotation performance. Part 2: Modelling improved PGM recovery and Cr2O3 rejection at Northam's UG2 concentrator.
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Chromite recovery from UG2 tailings by physical separation and flotation was studied. • Desliming, magnetic separation and acidic flotation (pH2.5) achieved target grades. • Results on deslimed feed at natural pH with various collectors have been promising. • Further work is underway on spiral concentrates, collector addition and froth ...
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Odisha state is the major reserve of the chromite ore. Due to the extensive applications, high-grade chromite ore is getting depleted day by day. Now it is a challenge for the industry to utilize these low-grade ores and tailings. Several attempts were taken to upgrade the low-grade chrome ores and tailings using different gravity separation …
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Chromite recovery from UG2 tailings by physical separation and flotation was studied. Desliming, magnetic separation and acidic flotation (pH2.5) achieved …
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The main economic PGE-bearing ore bodies within the Bushveld Complex mined today are the Merensky Reef, the UG-2 chromitite, and the Platreef. ... The processing plants of Sylvania Platinum Ltd. make use of gravity separation and flotation to recover both the chromite and PGE-rich fractions. Comminution and liberation of …
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This paper reviews the literature relating to the flotation of chrome spinel and presents a considered approach to the development of a robust flotation method to separate …
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DOI: 10.1016/J.MINENG.2003.08.001 Corpus ID: 95546178; Effects of frother type and froth height on the flotation behaviour of chromite in UG2 ore @article{Ekmekci2003EffectsOF, title={Effects of frother type and froth height on the flotation behaviour of chromite in UG2 ore}, author={Zafir Ekmekci and Dee Bradshaw …
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AbstractThe Bureau of Mines investigated column vs conventional flotation of chromite and fluorite ores. Fine-bubble column flotation of deslimed chromite ore produced a 44.7 % Cr2O3 rougher concentrate at 87.1 % recovery, whereas conventional flotation produced a 40.4 % Cr2O3 concentrate at 85.4 % recovery. Column flotation of …
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Serpentines could be successfully depressed oy-~ium fluorosilicate- which counteracts the effect of dissolved metal ions. In acid circuit, p H/5.5, the amenability of silicates to flotation decreases and chromite floats readily. The suitability of the process for chromite ore beneficiation requires further pilot plant tests.
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Low-grade chromite of Muslim Bagh, Balochistan, Pakisktan was beneficiated to produce chromite concen- trate by cationic flotation using disodium n-octadecyl sulfosuccinamate as collector. Effect of various parameters such as grind size, pulp density, pH, and conditioning time on the overall grade and recovery of chromite …
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Serpentines could be successfully depressed sodium fluorosilicate which counteracts the effect of dissolved metal ions. In acid circuit pH 5.5, the amenability of silicates to flotation decreases and chromite floats readily. The suitability of the process for chromite ore beneficiation requires further pilot plant tests. Résumé
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Different chromite ores from South Africa were made flotation using the anionic collector, A825 (petroleum sulfonate), after conditioning with H2SO4 at low pH values in the range …
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Mine chromite or in general concentration of similar low grade chrom ite deposits. An attempt was also made to increase the efficiency of chromite concentration by eliminating some of the loss of the finer sizes. Before the flotation tests the problem of Iron Determination in Chromite was presented to the writer by Mister M. D. O'Shaugh-nessy.
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In the UG2 ore (Bushveld Complex, South Africa) flotation, normally more than 3% of the gangue minerals, principally chromite with talc and pyroxene, report to the concentrate diluting the PGM ...
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Identical flotation tests were done on samples of Benbow-3 ore containing 30.2 percent Cr2O3 using H2SO4 or HCl as pH modifier. The samples were ground to 100 percent minus 100 mesh, deslimed at a 30-micrometer particle size, and floated with 0.6 pound Armac C per ton of ore. …
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Chrome ore flotation Generally, when the gravity separation and magnetic separation fail, flotation offers an alternative technique to concentrate the fine-grained and ultra-fine-grained chromite rocks and fine-grained chromite tailings which require fine grinding for liberation. But grinding will produce a large amount of ore slime.
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Chromite is an important strategic mineral usually associated with other gangue minerals, mainly silicates. The selective flotation of chromite minerals of any chromite ore have some difficulties due to dissolved cations from gangue minerals. By this work, selective flotation of various chromite ores were studied to determine some of the features of …
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Chromite and talc are two major gangue minerals in platinum bearing UG2 ore processed from the Bushveld Complex in South Africa. During flotation, talc is effectively depressed by the addition of ...
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The mineralogical analysis in the ore showed that the occurrence of chromite phases in the ore is very similar in all Middle group seam layers as indicated in Figure 3. The six end-member compositions that combine to form chromite are hercynite (FeAl 2 O 4), spinel (MgAl 2 O 4), Fe-chromite (FeCr 2 O 4), magnesiochromite (MgCr 2 O 4), magnetite ...
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The raw chrome ore is the tailings after floating separation of platinum and palladium, and the grade of Cr2O3 is relatively high. 【X-ray diffraction analysis】 The main mineral ores in the chrome sample …
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BENEFICIATION OF LANDI RAUD (MALAKAND, NWFP) CHROMITE ORE A. Hafeez, Saqib Ahmad and K. Hussain PCSIR Laboratories, Lahore-54600 ... Recovery of chromite from the fines generated during the crushing and grinding of the ore has been attempted by the flotation technique. An overall recovery of 81 % with a concentrate grade of 43.4 % …
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The selective flotation of chromite minerals of any chromite ore have some difficulties due to dissolved cations from gangue minerals. By this work, selective flotation of …
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1. Introduction. The flotation processes performed in the main iron ore beneficiation plants located in the Iron Quadrangle region (Brazil) consist of flotation of natural fine particles (below 0.15 mm, without grinding) or flotation of all the material after grinding using ball mills (run of mine).
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The selective flotation of chromite minerals of any chromite ore have some difficulties due to dissolved cations from gangue minerals. ... bench flotation tests for the ore sample fromYunnan Mine ...
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Commercial chromite ore beneficiation processes. Pure chromium is difficult to produce since it is readily contaminated by many other elements. Huge quantity of raw chromite ore is being mined and beneficiated in various chrome ore beneficiation plants throughout the world to cater the customized needs of various ferro alloy plants.
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Flotation using cationic collectors. 500 gms of the fines were subjected to flotation. It was attempted to float the slimes in an alkaline pulp of pH 11 adjusted with lime, 50 g/ton of amine acetale (Armac C) and Dowfroth 200 was used as frother at a dosage of 5 g/ton. The flotation time was 10 min. For the chromite flotation, the pH was ...
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A process mineralogical study based on three texturally and mineralogically different chromite-bearing ore types at the Nkomati nickel mine was undertaken, with focus on chromite. Chromite is a by-product of the Ni-Cu-Co-PGE ore at Nkomati Nickel ... Pre-flotation of the MCHR ore was performed to assess recovery of Cr2 O3 relative to the …
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The rougher flotation kinetics of the tw o ore bodies also differ slightly with the LG or es showing a much faster and higher rougher recovery compared to MG ores. Figure3: Rate kinetics for ...
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Chromite fines generated during communition of the low grade Landi-Raud chromite ore for the gravity processing, have been recovered by Froth flotation. A concentrate assaying …
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Keywords: Chromite; Flotation; Modifier; Separation; Serpentine 1. Introduction The world supply and reserves of chromite or chrome ore (FeCr2O4) have been dominated mainly by South Africa and
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From an ore feed grading 20.27% Cr2O3, a chromite concentrate of 28.71% Cr2O3 with recovery of 94.54 % could be obtained by flotation at collector dosage of 0.300 kg /t, neutral pulp (pH 9 ...
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The beneficiation studies of Suresh et al. (1981), concludes that low grade chromite ore of 16–25% Cr 2 O 3, of Sitampundi area of India, cannot be upgraded by using tabling and flotation techniques, to meet the metallurgical grade due to the intimate association of iron in the lattice of chromite.
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The South African platinum industry has advanced into an era of predominantly mining and processing Upper Group Two (UG-2) ore to extract Platinum Group Metals (PGMs). Flotation concentrates derived from processing UG-2 ore are typically characterized by high chrome contents (>3 wt.%) which are not amenable to …
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By this work, selective flotation of various chromite ores were studied to determine some of the features of chromite flotation. Different chromite ores from South Africa were made flotation using the anionic collector, A825 (petroleum sulfonate), after conditioning with H2SO4 at low pH values in the range of 1 and 3.
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Supply of world chromite (chrome ore) has come under severe pressure over the past year driven by strong demand for ferrochrome used in ferroalloy production for making stainless steel.
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